Annotation of libwww/Library/src/HTTP.c, revision 1.104
1.74 frystyk 1: /* HTTP.c
2: ** MULTITHREADED IMPLEMENTATION OF HTTP CLIENT
1.2 timbl 3: **
1.84 frystyk 4: ** (c) COPYRIGHT MIT 1995.
1.74 frystyk 5: ** Please first read the full copyright statement in the file COPYRIGH.
6: **
7: ** This module implments the HTTP protocol as a state machine
1.55 frystyk 8: **
9: ** History:
1.59 frystyk 10: ** < May 24 94 ?? Unknown - but obviously written
1.56 frystyk 11: ** May 24 94 HF Made reentrent and cleaned up a bit. Implemented
12: ** Forward, redirection, error handling and referer field
1.67 duns 13: ** 8 Jul 94 FM Insulate free() from _free structure element.
1.71 frystyk 14: ** Jul 94 HFN Written on top of HTTP.c, Henrik Frystyk
1.55 frystyk 15: **
1.1 timbl 16: */
17:
1.78 frystyk 18: /* Library include files */
19: #include "tcp.h"
1.1 timbl 20: #include "HTUtils.h"
1.78 frystyk 21: #include "HTString.h"
1.71 frystyk 22: #include "HTParse.h"
1.1 timbl 23: #include "HTTCP.h"
24: #include "HTFormat.h"
1.85 frystyk 25: #include "HTSocket.h"
1.94 frystyk 26: #include "HTReqMan.h"
1.2 timbl 27: #include "HTAlert.h"
1.14 luotonen 28: #include "HTAABrow.h" /* Access Authorization */
1.20 timbl 29: #include "HTTee.h" /* Tee off a cache stream */
1.78 frystyk 30: #include "HTFWrite.h" /* Write to cache file */
1.90 frystyk 31: #include "HTCache.h"
1.80 frystyk 32: #include "HTWriter.h"
1.54 luotonen 33: #include "HTError.h"
1.94 frystyk 34: #include "HTAccess.h"
1.55 frystyk 35: #include "HTChunk.h"
1.71 frystyk 36: #include "HTGuess.h"
1.95 frystyk 37: #include "HTNetMan.h"
1.80 frystyk 38: #include "HTTPReq.h"
1.55 frystyk 39: #include "HTTP.h" /* Implements */
40:
41: /* Macros and other defines */
1.94 frystyk 42: #ifndef HTTP_PORT
43: #define HTTP_PORT 80 /* Allocated to http by Jon Postel/ISI 24-Jan-92 */
44: #endif
45:
1.71 frystyk 46: #define PUTC(c) (*me->target->isa->put_character)(me->target, c)
47: #define PUTS(s) (*me->target->isa->put_string)(me->target, s)
48: #define PUTBLOCK(b, l) (*me->target->isa->put_block)(me->target, b, l)
49: #define FREE_TARGET (*me->target->isa->_free)(me->target)
1.74 frystyk 50: #define ABORT_TARGET (*me->target->isa->abort)(me->target, e)
1.2 timbl 51:
1.59 frystyk 52: /* Type definitions and global variables etc. local to this module */
1.94 frystyk 53:
54: /* Final states have negative value */
1.59 frystyk 55: typedef enum _HTTPState {
1.81 frystyk 56: HTTP_RETRY = -4,
1.71 frystyk 57: HTTP_ERROR = -3,
58: HTTP_NO_DATA = -2,
59: HTTP_GOT_DATA = -1,
60: HTTP_BEGIN = 0,
61: HTTP_NEED_CONNECTION,
62: HTTP_NEED_REQUEST,
63: HTTP_REDIRECTION,
1.91 frystyk 64: HTTP_NOT_MODIFIED,
65: HTTP_EXPIRED,
1.71 frystyk 66: HTTP_AA
1.59 frystyk 67: } HTTPState;
1.55 frystyk 68:
1.94 frystyk 69: /* This is the context structure for the this module */
1.55 frystyk 70: typedef struct _http_info {
1.81 frystyk 71: HTTPState state; /* Current State of the connection */
72: HTTPState next; /* Next state */
1.55 frystyk 73: } http_info;
74:
1.88 frystyk 75: #define MAX_STATUS_LEN 100 /* Max nb of chars to check StatusLine */
1.55 frystyk 76:
1.71 frystyk 77: struct _HTStream {
78: CONST HTStreamClass * isa;
79: HTStream * target;
80: HTRequest * request;
81: http_info * http;
82: HTSocketEOL state;
83: BOOL transparent;
1.81 frystyk 84: char * version; /* Should we save this? */
1.71 frystyk 85: int status;
1.81 frystyk 86: char * reason;
1.71 frystyk 87: char buffer[MAX_STATUS_LEN+1];
1.80 frystyk 88: int buflen;
1.71 frystyk 89: };
1.21 luotonen 90:
1.71 frystyk 91: /* ------------------------------------------------------------------------- */
92: /* Help Functions */
93: /* ------------------------------------------------------------------------- */
1.21 luotonen 94:
1.94 frystyk 95: /* HTTPCleanup
96: ** -----------
1.55 frystyk 97: ** This function closes the connection and frees memory.
1.94 frystyk 98: ** Returns YES on OK, else NO
1.1 timbl 99: */
1.94 frystyk 100: PRIVATE int HTTPCleanup (HTRequest *req, int status)
1.1 timbl 101: {
1.94 frystyk 102: HTNet *net = req->net;
103: http_info *http = (http_info *) net->context;
1.80 frystyk 104:
1.94 frystyk 105: /* Free stream with data TO network */
106: if (!HTRequest_isDestination(req) && req->input_stream) {
107: if (status == HT_INTERRUPTED)
108: (*req->input_stream->isa->abort)(req->input_stream, NULL);
109: else
110: (*req->input_stream->isa->_free)(req->input_stream);
1.104 ! frystyk 111: req->input_stream = NULL;
1.94 frystyk 112: }
1.88 frystyk 113:
1.94 frystyk 114: /* Remove the request object and our own context structure for http */
115: HTNet_delete(net, status);
116: FREE(http);
117: return YES;
1.55 frystyk 118: }
119:
120:
1.94 frystyk 121: PRIVATE BOOL HTTPAuthentication (HTRequest * request)
1.71 frystyk 122: {
123: HTAAScheme scheme;
124: HTList *valid_schemes = HTList_new();
125: HTAssocList **scheme_specifics = NULL;
1.76 frystyk 126: char *tmplate = NULL;
1.71 frystyk 127:
128: if (request->WWWAAScheme) {
129: if ((scheme = HTAAScheme_enum(request->WWWAAScheme)) != HTAA_UNKNOWN) {
130: HTList_addObject(valid_schemes, (void *) scheme);
131: if (!scheme_specifics) {
132: int i;
133: scheme_specifics = (HTAssocList**)
134: malloc(HTAA_MAX_SCHEMES * sizeof(HTAssocList*));
135: if (!scheme_specifics)
136: outofmem(__FILE__, "HTTPAuthentication");
137: for (i=0; i < HTAA_MAX_SCHEMES; i++)
138: scheme_specifics[i] = NULL;
139: }
140: scheme_specifics[scheme] = HTAA_parseArgList(request->WWWAARealm);
141: } else if (PROT_TRACE) {
1.104 ! frystyk 142: HTRequest_addError(request, ERR_INFO, NO, HTERR_UNKNOWN_AA,
1.71 frystyk 143: (void *) request->WWWAAScheme, 0, "HTTPAuthentication");
144: return NO;
145: }
146: }
147: if (request->WWWprotection) {
148: if (PROT_TRACE)
1.102 frystyk 149: TTYPrint(TDEST, "Protection template set to `%s'\n",
1.71 frystyk 150: request->WWWprotection);
1.76 frystyk 151: StrAllocCopy(tmplate, request->WWWprotection);
1.71 frystyk 152: }
153: request->valid_schemes = valid_schemes;
154: request->scheme_specifics = scheme_specifics;
1.76 frystyk 155: request->prot_template = tmplate;
1.71 frystyk 156: return YES;
157: }
158:
159:
160: /*
161: ** This is a big switch handling all HTTP return codes. It puts in any
162: ** appropiate error message and decides whether we should expect data
1.78 frystyk 163: ** or not.
1.55 frystyk 164: */
1.100 frystyk 165: PRIVATE void HTTPNextState (HTStream * me)
1.55 frystyk 166: {
1.71 frystyk 167: switch (me->status) {
168:
1.78 frystyk 169: case 0: /* 0.9 response */
170: case 200:
171: case 201:
172: case 202:
173: case 203:
1.81 frystyk 174: me->http->next = HTTP_GOT_DATA;
1.71 frystyk 175: break;
1.78 frystyk 176:
177: case 204: /* No Response */
1.81 frystyk 178: me->http->next = HTTP_NO_DATA;
1.71 frystyk 179: break;
1.78 frystyk 180:
1.71 frystyk 181: case 301: /* Moved */
182: case 302: /* Found */
1.81 frystyk 183: me->http->next = HTTP_REDIRECTION;
1.71 frystyk 184: break;
1.55 frystyk 185:
1.71 frystyk 186: case 303: /* Method */
1.92 frystyk 187: HTAlert(me->request,
188: "This client doesn't support automatic redirection of type `Method'");
1.81 frystyk 189: me->http->next = HTTP_ERROR;
1.71 frystyk 190: break;
1.91 frystyk 191:
192: case 304: /* Not Modified */
193: me->http->next = HTTP_NOT_MODIFIED;
194: break;
1.55 frystyk 195:
1.78 frystyk 196: case 400: /* Bad Request */
1.104 ! frystyk 197: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_BAD_REQUEST,
1.100 frystyk 198: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.81 frystyk 199: me->http->next = HTTP_ERROR;
1.71 frystyk 200: break;
1.70 howcome 201:
1.71 frystyk 202: case 401:
1.104 ! frystyk 203: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_UNAUTHORIZED,
1.100 frystyk 204: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.81 frystyk 205: me->http->next = HTTP_AA;
1.71 frystyk 206: break;
207:
208: case 402: /* Payment required */
1.104 ! frystyk 209: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_PAYMENT_REQUIRED,
1.100 frystyk 210: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.81 frystyk 211: me->http->next = HTTP_ERROR;
1.71 frystyk 212: break;
1.55 frystyk 213:
1.71 frystyk 214: case 403: /* Forbidden */
1.104 ! frystyk 215: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_FORBIDDEN,
1.100 frystyk 216: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.81 frystyk 217: me->http->next = HTTP_ERROR;
1.71 frystyk 218: break;
1.55 frystyk 219:
1.71 frystyk 220: case 404: /* Not Found */
1.104 ! frystyk 221: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NOT_FOUND,
1.100 frystyk 222: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.81 frystyk 223: me->http->next = HTTP_ERROR;
1.71 frystyk 224: break;
225:
1.78 frystyk 226: case 405: /* Not Allowed */
1.104 ! frystyk 227: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NOT_ALLOWED,
1.100 frystyk 228: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.81 frystyk 229: me->http->next = HTTP_ERROR;
1.78 frystyk 230: break;
231:
232: case 406: /* None Acceptable */
1.104 ! frystyk 233: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NONE_ACCEPTABLE,
1.100 frystyk 234: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.81 frystyk 235: me->http->next = HTTP_ERROR;
1.78 frystyk 236: break;
237:
238: case 407: /* Proxy Authentication Required */
1.104 ! frystyk 239: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_PROXY,
1.100 frystyk 240: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.81 frystyk 241: me->http->next = HTTP_ERROR;
1.78 frystyk 242: break;
243:
244: case 408: /* Request Timeout */
1.104 ! frystyk 245: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_TIMEOUT,
1.100 frystyk 246: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.81 frystyk 247: me->http->next = HTTP_ERROR;
1.78 frystyk 248: break;
249:
1.71 frystyk 250: case 500:
1.104 ! frystyk 251: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_INTERNAL,
1.100 frystyk 252: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.81 frystyk 253: me->http->next = HTTP_ERROR;
1.78 frystyk 254: break;
255:
1.71 frystyk 256: case 501:
1.104 ! frystyk 257: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_NOT_IMPLEMENTED,
1.100 frystyk 258: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.81 frystyk 259: me->http->next = HTTP_ERROR;
1.78 frystyk 260: break;
261:
262: case 502:
1.104 ! frystyk 263: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_BAD_GATE,
1.100 frystyk 264: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.81 frystyk 265: me->http->next = HTTP_ERROR;
1.78 frystyk 266: break;
267:
268: case 503:
1.104 ! frystyk 269: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_DOWN,
1.100 frystyk 270: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.81 frystyk 271:
272: /* If Retry-After header is found then return HT_RETRY else HT_ERROR */
273: if (me->request->retry_after)
274: me->http->next = HTTP_RETRY;
275: else
276: me->http->next = HTTP_ERROR;
1.78 frystyk 277: break;
278:
279: case 504:
1.104 ! frystyk 280: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_GATE_TIMEOUT,
1.100 frystyk 281: me->reason, (int) strlen(me->reason), "HTTPNextState");
1.81 frystyk 282: me->http->next = HTTP_ERROR;
1.71 frystyk 283: break;
1.78 frystyk 284:
1.71 frystyk 285: default: /* bad number */
1.104 ! frystyk 286: HTRequest_addError(me->request, ERR_FATAL, NO, HTERR_BAD_REPLY,
1.100 frystyk 287: (void *) me->buffer, me->buflen, "HTTPNextState");
1.81 frystyk 288: me->http->next = HTTP_ERROR;
1.71 frystyk 289: break;
1.55 frystyk 290: }
291: }
292:
1.71 frystyk 293: /* ------------------------------------------------------------------------- */
294: /* HTTP Status Line Stream */
295: /* ------------------------------------------------------------------------- */
1.55 frystyk 296:
1.71 frystyk 297: /*
1.80 frystyk 298: ** Analyse the stream we have read. If it is a HTTP 1.0 or higher
1.71 frystyk 299: ** then create a MIME-stream, else create a Guess stream to find out
300: ** what the 0.9 server is sending. We need to copy the buffer as we don't
301: ** know if we can modify the contents or not.
1.78 frystyk 302: **
303: ** Stream handling is a function of the status code returned from the
304: ** server:
305: ** 200: Use `output_stream' in HTRequest structure
1.94 frystyk 306: ** else: Use `debug_stream' in HTRequest structure
1.80 frystyk 307: **
308: ** Return: YES if buffer should be written out. NO otherwise
1.56 frystyk 309: */
1.100 frystyk 310: PRIVATE int stream_pipe (HTStream * me)
1.56 frystyk 311: {
1.71 frystyk 312: HTRequest *req = me->request;
1.95 frystyk 313: HTNet *net = req->net;
1.80 frystyk 314: if (me->target) {
315: int status = PUTBLOCK(me->buffer, me->buflen);
316: if (status == HT_OK)
317: me->transparent = YES;
318: return status;
1.88 frystyk 319: } else if (HTRequest_isSource(req) && !req->output_stream) {
320: /*
321: ** We need to wait for the destinations to get ready
322: */
323: return HT_WOULD_BLOCK;
1.80 frystyk 324: }
1.88 frystyk 325:
1.81 frystyk 326: if (strncasecomp(me->buffer, "http/", 5)) {
1.80 frystyk 327: int status;
1.104 ! frystyk 328: HTRequest_addError(req, ERR_INFO, NO, HTERR_HTTP09,
1.80 frystyk 329: (void *) me->buffer, me->buflen, "HTTPStatusStream");
330: me->target = HTGuess_new(req, NULL, WWW_UNKNOWN,
331: req->output_format, req->output_stream);
1.88 frystyk 332: me->http->next = HTTP_GOT_DATA;
1.80 frystyk 333: if ((status = PUTBLOCK(me->buffer, me->buflen)) == HT_OK)
334: me->transparent = YES;
1.98 frystyk 335: HTDNS_setServerVersion(net->dns, HTTP_09);
1.80 frystyk 336: return status;
337: } else {
1.81 frystyk 338: char *ptr = me->buffer+5; /* Skip the HTTP part */
339: me->version = HTNextField(&ptr);
1.95 frystyk 340:
341: /* here we want to find out when to use persistent connection */
1.98 frystyk 342: HTDNS_setServerVersion(net->dns, HTTP_10);
1.95 frystyk 343:
1.81 frystyk 344: me->status = atoi(HTNextField(&ptr));
345: me->reason = ptr;
346: if ((ptr = strchr(me->reason, '\r')) != NULL) /* Strip \r and \n */
347: *ptr = '\0';
348: else if ((ptr = strchr(me->reason, '\n')) != NULL)
349: *ptr = '\0';
350:
351: /* Set up the streams */
352: if (me->status==200) {
1.80 frystyk 353: HTStream *s;
1.103 frystyk 354: me->target = HTStreamStack(WWW_MIME, req->output_format,
355: req->output_stream, req, NO);
1.80 frystyk 356:
1.103 frystyk 357: /* howcome: test for return value from HTCacheWriter 12/1/95 */
358: if (req->method==METHOD_GET && HTCache_isEnabled() &&
359: (s = HTCacheWriter(req, NULL, WWW_MIME, req->output_format,
360: req->output_stream))) {
361: me->target = HTTee(me->target, s);
362: }
1.94 frystyk 363: } else if (req->debug_stream) {
364: me->target = HTStreamStack(WWW_MIME, req->debug_format,
365: req->debug_stream, req, NO);
1.71 frystyk 366: } else {
1.103 frystyk 367: /* We still need to parser the MIME part */
368: me->target = HTStreamStack(WWW_MIME, WWW_PRESENT,
369: HTBlackHole(), req, NO);
1.56 frystyk 370: }
1.103 frystyk 371: if (!me->target) me->target = HTBlackHole();
1.56 frystyk 372: }
1.81 frystyk 373: HTTPNextState(me); /* Get next state */
1.80 frystyk 374: me->transparent = YES;
375: return HT_OK;
1.71 frystyk 376: }
1.56 frystyk 377:
1.80 frystyk 378: /*
379: ** Searches for HTTP header line until buffer fills up or a CRLF or LF
380: ** is found
381: */
1.100 frystyk 382: PRIVATE int HTTPStatus_put_block (HTStream * me, CONST char * b, int l)
1.71 frystyk 383: {
1.80 frystyk 384: while (!me->transparent && l-- > 0) {
385: int status;
386: if (me->target) {
387: if ((status = stream_pipe(me)) != HT_OK)
388: return status;
389: } else {
390: *(me->buffer+me->buflen++) = *b;
391: if (me->state == EOL_FCR) {
392: if (*b == LF) { /* Line found */
393: if ((status = stream_pipe(me)) != HT_OK)
394: return status;
395: } else {
396: me->state = EOL_BEGIN;
397: }
398: } else if (*b == CR) {
399: me->state = EOL_FCR;
400: } else if (*b == LF) {
401: if ((status = stream_pipe(me)) != HT_OK)
402: return status;
1.71 frystyk 403: } else {
1.80 frystyk 404: if (me->buflen >= MAX_STATUS_LEN) {
405: if ((status = stream_pipe(me)) != HT_OK)
406: return status;
407: }
1.71 frystyk 408: }
1.80 frystyk 409: b++;
1.71 frystyk 410: }
1.56 frystyk 411: }
1.99 frystyk 412: if (l > 0) return PUTBLOCK(b, l);
413: return HT_OK;
1.56 frystyk 414: }
415:
1.100 frystyk 416: PRIVATE int HTTPStatus_put_string (HTStream * me, CONST char * s)
1.71 frystyk 417: {
1.80 frystyk 418: return HTTPStatus_put_block(me, s, (int) strlen(s));
1.71 frystyk 419: }
1.56 frystyk 420:
1.100 frystyk 421: PRIVATE int HTTPStatus_put_character (HTStream * me, char c)
1.71 frystyk 422: {
1.80 frystyk 423: return HTTPStatus_put_block(me, &c, 1);
424: }
425:
1.100 frystyk 426: PRIVATE int HTTPStatus_flush (HTStream * me)
1.80 frystyk 427: {
428: return (*me->target->isa->flush)(me->target);
1.71 frystyk 429: }
430:
1.100 frystyk 431: PRIVATE int HTTPStatus_free (HTStream * me)
1.71 frystyk 432: {
1.87 frystyk 433: int status = HT_OK;
434: if (me->target) {
435: if ((status = (*me->target->isa->_free)(me->target))==HT_WOULD_BLOCK)
436: return HT_WOULD_BLOCK;
437: }
1.71 frystyk 438: free(me);
1.100 frystyk 439: return status;
1.71 frystyk 440: }
441:
1.104 ! frystyk 442: PRIVATE int HTTPStatus_abort (HTStream * me, HTList * e)
1.71 frystyk 443: {
444: if (me->target)
1.74 frystyk 445: ABORT_TARGET;
1.71 frystyk 446: free(me);
1.74 frystyk 447: if (PROT_TRACE)
1.102 frystyk 448: TTYPrint(TDEST, "HTTPStatus.. ABORTING...\n");
1.80 frystyk 449: return HT_ERROR;
1.71 frystyk 450: }
451:
452: /* HTTPStatus Stream
453: ** -----------------
454: */
455: PRIVATE CONST HTStreamClass HTTPStatusClass =
456: {
457: "HTTPStatus",
1.80 frystyk 458: HTTPStatus_flush,
1.71 frystyk 459: HTTPStatus_free,
460: HTTPStatus_abort,
461: HTTPStatus_put_character,
462: HTTPStatus_put_string,
463: HTTPStatus_put_block
464: };
465:
1.100 frystyk 466: PRIVATE HTStream * HTTPStatus_new (HTRequest * request, http_info * http)
1.71 frystyk 467: {
468: HTStream * me = (HTStream *) calloc(1, sizeof(HTStream));
469: if (!me) outofmem(__FILE__, "HTTPStatus_new");
470: me->isa = &HTTPStatusClass;
471: me->request = request;
472: me->http = http;
473: me->state = EOL_BEGIN;
474: return me;
475: }
476:
477: /* ------------------------------------------------------------------------- */
478:
479: /* Load Document from HTTP Server HTLoadHTTP
1.55 frystyk 480: ** ==============================
481: **
482: ** Given a hypertext address, this routine loads a document.
483: **
484: ** On entry,
485: ** request This is the request structure
1.94 frystyk 486: ** returns HT_ERROR Error has occured in call back
487: ** HT_OK Call back was OK
1.55 frystyk 488: */
1.94 frystyk 489: PUBLIC int HTLoadHTTP (SOCKET soc, HTRequest * request, SockOps ops)
1.55 frystyk 490: {
1.71 frystyk 491: int status = HT_ERROR;
1.94 frystyk 492: HTNet *net = request->net; /* Generic protocol information */
1.55 frystyk 493: http_info *http; /* Specific protocol information */
1.17 timbl 494:
1.94 frystyk 495: /*
496: ** Initiate a new http structure and bind to request structure
497: ** This is actually state HTTP_BEGIN, but it can't be in the state
498: ** machine as we need the structure first.
499: */
500: if (ops == FD_NONE) {
1.102 frystyk 501: if (PROT_TRACE) TTYPrint(TDEST, "HTTP........ Looking for `%s\'\n",
1.94 frystyk 502: HTAnchor_physical(request->anchor));
1.71 frystyk 503: if ((http = (http_info *) calloc(1, sizeof(http_info))) == NULL)
504: outofmem(__FILE__, "HTLoadHTTP");
505: http->state = HTTP_BEGIN;
1.85 frystyk 506: http->next = HTTP_ERROR;
1.94 frystyk 507: net->context = http;
1.98 frystyk 508: } else if (ops == FD_CLOSE) { /* Interrupted */
1.100 frystyk 509: #if 1
510: if (HTRequest_isPostWeb(request))
511: #else
1.94 frystyk 512: if(HTRequest_isPostWeb(request)&&!HTRequest_isMainDestination(request))
1.100 frystyk 513: #endif
1.94 frystyk 514: HTTPCleanup(request, HT_IGNORE);
515: else
516: HTTPCleanup(request, HT_INTERRUPTED);
517: return HT_OK;
518: } else
519: http = (http_info *) net->context; /* Get existing copy */
1.71 frystyk 520:
521: /* Now jump into the machine. We know the state from the previous run */
522: while (1) {
523: switch (http->state) {
524: case HTTP_BEGIN:
525: /*
526: ** Compose authorization information (this was moved here
527: ** from after the making of the connection so that the connection
528: ** wouldn't have to wait while prompting username and password
529: ** from the user). -- AL 13.10.93
530: */
531: HTAA_composeAuth(request);
532: if (PROT_TRACE) {
533: if (request->authorization)
1.102 frystyk 534: TTYPrint(TDEST, "HTTP........ Sending Authorization: %s\n",
1.71 frystyk 535: request->authorization);
536: else
1.102 frystyk 537: TTYPrint(TDEST,
1.71 frystyk 538: "HTTP........ Not sending authorization (yet)\n");
539: }
540: http->state = HTTP_NEED_CONNECTION;
541: break;
542:
543: case HTTP_NEED_CONNECTION: /* Now let's set up a connection */
1.94 frystyk 544: status = HTDoConnect(net, HTAnchor_physical(request->anchor),
1.95 frystyk 545: HTTP_PORT);
1.80 frystyk 546: if (status == HT_OK) {
1.95 frystyk 547:
548: /* Check the protocol class */
1.97 frystyk 549: char *s_class = HTDNS_serverClass(net->dns);
550: if (s_class && strcasecomp(s_class, "http")) {
1.104 ! frystyk 551: HTRequest_addError(request, ERR_FATAL, NO, HTERR_CLASS,
1.95 frystyk 552: NULL, 0, "HTLoadHTTP");
553: http->state = HTTP_ERROR;
554: break;
555: }
556: HTDNS_setServerClass(net->dns, "http");
557:
1.71 frystyk 558: if (PROT_TRACE)
1.102 frystyk 559: TTYPrint(TDEST, "HTTP........ Connected, socket %d\n",
1.94 frystyk 560: net->sockfd);
1.80 frystyk 561:
1.88 frystyk 562: /* Set up stream TO network */
563: request->input_stream =
1.100 frystyk 564: HTTPRequest_new(request, HTBufWriter_new(net, YES, 512));
1.88 frystyk 565:
566: /*
567: ** Set up concurrent read/write if this request isn't the
568: ** source for a PUT or POST. As source we don't start reading
569: ** before all destinations are ready. If destination then
570: ** register the input stream and get ready for read
571: */
572: if (HTRequest_isPostWeb(request)) {
1.94 frystyk 573: HTEvent_Register(net->sockfd, request, (SockOps) FD_READ,
574: HTLoadHTTP, net->priority);
1.88 frystyk 575: HTRequest_linkDestination(request);
576: }
577:
578: /* Set up stream FROM network and corresponding read buffer */
1.94 frystyk 579: net->isoc = HTInputSocket_new(net->sockfd);
580: net->target = HTImProxy ?
1.80 frystyk 581: request->output_stream : HTTPStatus_new(request, http);
1.88 frystyk 582:
1.71 frystyk 583: http->state = HTTP_NEED_REQUEST;
1.96 frystyk 584: } else if (status == HT_WOULD_BLOCK || status == HT_PERSISTENT)
1.94 frystyk 585: return HT_OK;
1.71 frystyk 586: else
587: http->state = HTTP_ERROR; /* Error or interrupt */
588: break;
589:
1.87 frystyk 590: /* As we can do simultanous read and write this is now one state */
1.80 frystyk 591: case HTTP_NEED_REQUEST:
1.94 frystyk 592: if (ops == FD_WRITE || ops == FD_NONE) {
1.88 frystyk 593: if (HTRequest_isDestination(request)) {
1.94 frystyk 594: HTNet *srcnet = request->source->net;
595: HTEvent_Register(srcnet->sockfd, request->source,
596: (SockOps) FD_READ,
1.100 frystyk 597: srcnet->cbf, srcnet->priority);
1.94 frystyk 598: return HT_OK;
1.80 frystyk 599: }
1.101 frystyk 600: status = request->PostCallback ?
601: request->PostCallback(request, request->input_stream) :
1.88 frystyk 602: (*request->input_stream->isa->flush)(request->input_stream);
1.71 frystyk 603: if (status == HT_WOULD_BLOCK)
1.94 frystyk 604: return HT_OK;
605: else
606: ops = FD_READ; /* Trick to ensure that we do READ */
607: } else if (ops == FD_READ) {
1.98 frystyk 608: status = HTSocketRead(request, net);
1.80 frystyk 609: if (status == HT_WOULD_BLOCK)
1.94 frystyk 610: return HT_OK;
611: else if (status == HT_LOADED)
612: http->state = http->next; /* Jump to next state */
1.91 frystyk 613: else if (status == HT_RELOAD)
614: http->state = HTTP_EXPIRED;
1.94 frystyk 615: else
616: http->state = HTTP_ERROR;
1.90 frystyk 617: } else {
1.78 frystyk 618: http->state = HTTP_ERROR;
1.90 frystyk 619: }
1.71 frystyk 620: break;
1.80 frystyk 621:
1.91 frystyk 622: case HTTP_NOT_MODIFIED:
623: http->state = HTTP_ERROR;
624: break;
625:
626: case HTTP_EXPIRED:
627: /* Dirty hack and fall through */
1.102 frystyk 628: if (PROT_TRACE) TTYPrint(TDEST, "HTTP........ Expired\n");
1.91 frystyk 629: request->redirect = request->anchor->address;
630:
1.80 frystyk 631: case HTTP_REDIRECTION:
1.88 frystyk 632: /* Clean up the other connections or just this one */
633: if (HTRequest_isPostWeb(request))
634: HTRequest_killPostWeb(request);
635: else
1.94 frystyk 636: HTTPCleanup(request, HT_IGNORE);
1.88 frystyk 637:
638: /* If we found a new URL in the response */
1.71 frystyk 639: if (request->redirect) {
640: if (status == 301) {
1.104 ! frystyk 641: HTRequest_addError(request, ERR_INFO, NO, HTERR_MOVED,
1.71 frystyk 642: (void *) request->redirect,
643: (int) strlen(request->redirect), "HTLoadHTTP");
644: } else if (status == 302) {
1.104 ! frystyk 645: HTRequest_addError(request, ERR_INFO, NO, HTERR_FOUND,
1.71 frystyk 646: (void *) request->redirect,
647: (int) strlen(request->redirect), "HTLoadHTTP");
1.55 frystyk 648: }
1.88 frystyk 649:
650: /* If we haven't reached the limit for redirection */
1.94 frystyk 651: if (HTRequest_retry(request)) {
1.87 frystyk 652: HTAnchor *anchor = HTAnchor_findAddress(request->redirect);
1.88 frystyk 653: if (HTRequest_isPostWeb(request)) {
654: HTRequest *dest = HTRequest_mainDestination(request);
655: char *msg=(char*)malloc(strlen(request->redirect)+100);
1.87 frystyk 656: if (!msg) outofmem(__FILE__, "HTLoadHTTP");
1.88 frystyk 657: sprintf(msg, "\nLocation of %s has changed to %s for method %s, continue operation?",
658: HTRequest_isDestination(request) ?
659: "destination" : "source", request->redirect,
660: HTMethod_name(request->method));
1.92 frystyk 661: if (HTConfirm(request, msg)) {
1.87 frystyk 662: free(msg);
1.88 frystyk 663:
664: /* The new anchor inherits the Post Web */
1.91 frystyk 665: HTAnchor_moveAllLinks((HTAnchor *) request->anchor,
666: anchor);
1.88 frystyk 667: if (HTRequest_isSource(request))
668: HTRequest_delete(request);
1.94 frystyk 669: return HTCopyAnchor((HTAnchor *) anchor, dest) ?
670: HT_OK : HT_ERROR;
1.87 frystyk 671: }
672: free(msg);
1.94 frystyk 673: return HT_OK;
1.101 frystyk 674: } if (request->PostCallback) {
1.87 frystyk 675: #if 0
1.94 frystyk 676: return HTUploadAnchor((HTAnchor*) anchor, request) ?
677: HT_OK : HT_ERROR;
1.87 frystyk 678: #endif
679: } else {
1.94 frystyk 680: return HTLoadAnchor((HTAnchor *) anchor, request) ?
681: HT_OK : HT_ERROR;
1.87 frystyk 682: }
1.71 frystyk 683: } else {
1.104 ! frystyk 684: HTRequest_addError(request, ERR_FATAL, NO, HTERR_MAX_REDIRECT,
1.58 frystyk 685: NULL, 0, "HTLoadHTTP");
1.88 frystyk 686: if (HTRequest_isPostWeb(request)) {
687: BOOL main = HTRequest_isMainDestination(request);
1.91 frystyk 688: if (HTRequest_isDestination(request)) {
689: HTLink *link =
690: HTAnchor_findLink((HTAnchor *) request->source->anchor,
691: (HTAnchor *) request->anchor);
692: HTAnchor_setLinkResult(link, HT_LINK_ERROR);
693: }
1.94 frystyk 694: HTNet_callback(request, main ? HT_ERROR : HT_IGNORE);
1.88 frystyk 695: HTRequest_removeDestination(request);
696: }
1.94 frystyk 697: return HT_OK;
1.58 frystyk 698: }
1.71 frystyk 699: } else {
1.104 ! frystyk 700: HTRequest_addError(request, ERR_FATAL, NO, HTERR_BAD_REPLY,
1.71 frystyk 701: NULL, 0, "HTLoadHTTP");
1.94 frystyk 702: return HT_OK;
1.71 frystyk 703: }
704: break;
1.80 frystyk 705:
1.71 frystyk 706: case HTTP_AA:
1.88 frystyk 707: /* Clean up the other connections or just this one */
708: if (HTRequest_isPostWeb(request))
709: HTRequest_killPostWeb(request);
710: else
1.94 frystyk 711: HTTPCleanup(request, HT_IGNORE);
1.88 frystyk 712:
713: /* Ask the user for a UserID and a passwd */
714: if (HTTPAuthentication(request) && HTAA_retryWithAuth(request)) {
1.94 frystyk 715: int ret;
1.88 frystyk 716: if (HTRequest_isPostWeb(request)) {
717: HTRequest *dest = HTRequest_mainDestination(request);
718: HTAnchor_appendMethods(request->anchor, request->method);
1.94 frystyk 719: ret=HTCopyAnchor((HTAnchor*)request->source->anchor, dest);
720: return ret ? HT_OK : HT_ERROR;
1.101 frystyk 721: } else if (request->PostCallback) {
1.85 frystyk 722: #if 0
1.94 frystyk 723: ret = HTUploadAnchor((HTAnchor*) request->anchor,request);
724: return ret ? HT_OK : HT_ERROR;
1.85 frystyk 725: #endif
726: } else {
1.94 frystyk 727: ret = HTLoadAnchor((HTAnchor *) request->anchor, request);
728: return ret ? HT_OK : HT_ERROR;
1.85 frystyk 729: }
1.88 frystyk 730: } else { /* If the guy said no :-( */
1.104 ! frystyk 731: HTRequest_addError(request, ERR_FATAL, NO, HTERR_UNAUTHORIZED,
1.94 frystyk 732: NULL, 0, "HTLoadHTTP");
1.88 frystyk 733: if (HTRequest_isPostWeb(request)) {
734: BOOL main = HTRequest_isMainDestination(request);
1.91 frystyk 735: if (HTRequest_isDestination(request)) {
736: HTLink *link =
737: HTAnchor_findLink((HTAnchor *) request->source->anchor,
738: (HTAnchor *) request->anchor);
739: HTAnchor_setLinkResult(link, HT_LINK_ERROR);
740: }
1.94 frystyk 741: HTNet_callback(request, main ? HT_ERROR : HT_IGNORE);
1.88 frystyk 742: HTRequest_removeDestination(request);
743: }
1.94 frystyk 744: return HT_OK;
1.71 frystyk 745: }
746: break;
1.80 frystyk 747:
1.71 frystyk 748: case HTTP_GOT_DATA:
1.88 frystyk 749: if (HTRequest_isPostWeb(request)) {
1.100 frystyk 750: HTTPCleanup(request, HTRequest_isMainDestination(request) ?
751: HT_ERROR : HT_IGNORE);
1.91 frystyk 752: if (HTRequest_isDestination(request)) {
753: HTLink *link =
754: HTAnchor_findLink((HTAnchor *) request->source->anchor,
755: (HTAnchor *) request->anchor);
756: HTAnchor_setLinkResult(link, HT_LINK_OK);
757: }
1.88 frystyk 758: HTRequest_removeDestination(request);
1.94 frystyk 759: } else
760: HTTPCleanup(request, HT_LOADED);
761: return HT_OK;
1.71 frystyk 762: break;
763:
764: case HTTP_NO_DATA:
1.88 frystyk 765: if (HTRequest_isPostWeb(request)) {
1.100 frystyk 766: HTTPCleanup(request, HTRequest_isMainDestination(request) ?
767: HT_ERROR : HT_IGNORE);
1.91 frystyk 768: if (HTRequest_isDestination(request)) {
769: HTLink *link =
770: HTAnchor_findLink((HTAnchor *) request->source->anchor,
771: (HTAnchor *) request->anchor);
772: HTAnchor_setLinkResult(link, HT_LINK_OK);
773: }
1.88 frystyk 774: HTRequest_removeDestination(request);
1.94 frystyk 775: } else
776: HTTPCleanup(request, HT_NO_DATA);
777: return HT_OK;
1.71 frystyk 778: break;
1.80 frystyk 779:
1.94 frystyk 780: case HTTP_RETRY:
1.88 frystyk 781: if (HTRequest_isPostWeb(request)) {
1.100 frystyk 782: HTTPCleanup(request, HTRequest_isMainDestination(request) ?
783: HT_ERROR : HT_IGNORE);
1.91 frystyk 784: HTRequest_killPostWeb(request);
785: if (HTRequest_isDestination(request)) {
786: HTLink *link =
787: HTAnchor_findLink((HTAnchor*) request->source->anchor,
788: (HTAnchor*) request->anchor);
789: HTAnchor_setLinkResult(link, HT_LINK_ERROR);
790: }
1.88 frystyk 791: HTRequest_removeDestination(request);
1.91 frystyk 792: } else
1.94 frystyk 793: HTTPCleanup(request, HT_RETRY);
794: return HT_OK;
1.81 frystyk 795: break;
796:
1.71 frystyk 797: case HTTP_ERROR:
1.88 frystyk 798: /* Clean up the other connections or just this one */
799: if (HTRequest_isPostWeb(request)) {
1.100 frystyk 800: HTTPCleanup(request, HTRequest_isMainDestination(request) ?
801: HT_ERROR : HT_IGNORE);
1.88 frystyk 802: HTRequest_killPostWeb(request);
1.91 frystyk 803: if (HTRequest_isDestination(request)) {
804: HTLink *link =
805: HTAnchor_findLink((HTAnchor *) request->source->anchor,
806: (HTAnchor *) request->anchor);
807: HTAnchor_setLinkResult(link, HT_LINK_ERROR);
808: }
809: HTRequest_removeDestination(request);
1.88 frystyk 810: } else
1.94 frystyk 811: HTTPCleanup(request, HT_ERROR);
812: return HT_OK;
1.71 frystyk 813: break;
814: }
815: } /* End of while(1) */
816: }
1.88 frystyk 817:
1.21 luotonen 818:
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